SetMailslotInfo

// KERNEL32.dll
#include <windows.h>

BOOL SetMailslotInfo(
    HANDLE hMailslot,
    DWORD lReadTimeout
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetMailslotInfo(
    hMailslot As IntPtr,   ' HANDLE
    lReadTimeout As UInteger   ' DWORD
) As Boolean
End Function

' hMailslot : HANDLE
' lReadTimeout : DWORD
Declare PtrSafe Function SetMailslotInfo Lib "kernel32" ( _
    ByVal hMailslot As LongPtr, _
    ByVal lReadTimeout As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SetMailslotInfo = ctypes.windll.kernel32.SetMailslotInfo
SetMailslotInfo.restype = wintypes.BOOL
SetMailslotInfo.argtypes = [
    wintypes.HANDLE,  # hMailslot : HANDLE
    wintypes.DWORD,  # lReadTimeout : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
SetMailslotInfo = Fiddle::Function.new(
  lib['SetMailslotInfo'],
  [
    Fiddle::TYPE_VOIDP,  # hMailslot : HANDLE
    -Fiddle::TYPE_INT,  # lReadTimeout : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn SetMailslotInfo(
        hMailslot: *mut core::ffi::c_void,  // HANDLE
        lReadTimeout: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool SetMailslotInfo(IntPtr hMailslot, uint lReadTimeout);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_SetMailslotInfo' -Namespace Win32 -PassThru
# $api::SetMailslotInfo(hMailslot, lReadTimeout)

#uselib "KERNEL32.dll"
#func global SetMailslotInfo "SetMailslotInfo" sptr, sptr
; SetMailslotInfo hMailslot, lReadTimeout   ; 戻り値は stat
; hMailslot : HANDLE -> "sptr"
; lReadTimeout : DWORD -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "KERNEL32.dll"
#cfunc global SetMailslotInfo "SetMailslotInfo" sptr, int
; res = SetMailslotInfo(hMailslot, lReadTimeout)
; hMailslot : HANDLE -> "sptr"
; lReadTimeout : DWORD -> "int"

; BOOL SetMailslotInfo(HANDLE hMailslot, DWORD lReadTimeout)
#uselib "KERNEL32.dll"
#cfunc global SetMailslotInfo "SetMailslotInfo" intptr, int
; res = SetMailslotInfo(hMailslot, lReadTimeout)
; hMailslot : HANDLE -> "intptr"
; lReadTimeout : DWORD -> "int"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procSetMailslotInfo = kernel32.NewProc("SetMailslotInfo")
)

// hMailslot (HANDLE), lReadTimeout (DWORD)
r1, _, err := procSetMailslotInfo.Call(
	uintptr(hMailslot),
	uintptr(lReadTimeout),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SetMailslotInfo(
  hMailslot: THandle;   // HANDLE
  lReadTimeout: DWORD   // DWORD
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'SetMailslotInfo';

result := DllCall("KERNEL32\SetMailslotInfo"
    , "Ptr", hMailslot   ; HANDLE
    , "UInt", lReadTimeout   ; DWORD
    , "Int")   ; return: BOOL

●SetMailslotInfo(hMailslot, lReadTimeout) = DLL("KERNEL32.dll", "bool SetMailslotInfo(void*, dword)")
# 呼び出し: SetMailslotInfo(hMailslot, lReadTimeout)
# hMailslot : HANDLE -> "void*"
# lReadTimeout : DWORD -> "dword"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。